- 584 — 



To3iLoeera» D'Orb. 1841. Pal. franc?. Terr. cret. I. p. 472.* 

 Cf. Agass. in Sow. Min. Conch. ad tab. 216 et 234. 

 Etym. To^ov^ arcus; xeQaSy cornu. 

 Genus Ammonidarum ab Hamitis segregatum. 

 Desh. 1845. Lamck. ed. 2a XI. p. 269. 325. — genus 



Ammoneorum. 

 Gbay 1842. Syn. Brit. Mus. p. 88. 92. — genusAm- 



monitidarum. 

 Geinitz 1845. Grundr. d, Verst. — subgenus Ha- 

 mitae. 

 = Ammonoceras Lamck. (Desh.) 

 Toxolasma Rafin. 1831. Contin. Monogr. Biv. * 



Etym. To^ov, arcus; klaafia, lamina. (Toxelasma 



corr. Ag.) 

 (Genus Naiadeorum. Agass. Nom.) 

 Toxostoma (Raf.) 1831. Enum. and Account. * Cf. Fer. 

 1835. BuU. zool. p. 93. 

 Etym. to^ov, arcus; oi6/^a, os. ") 

 Genus Helicidarum. (Agass. Nom.) 

 Toxotrema Rafin. 1819. Journ. de phys. toin. 88. p. 425. 

 Cf. Blainv. 1828. Dict. sc. nat. tora. 55. p. 116, 

 Eiym. to^ov, arcus; TQtjfia, foramen. 

 Genus Helicidarum. 

 Traehellpoda Jay. Bronn. (Leth.) Sow. jun. vid. Tra- 



cheiopoda. 

 Traelielobraneltla Gray 1821. Lond. med. Repos. XV. 

 p. 232. 

 Etym. TQa%i^Xos, cervix; ^Qayxia, brauchiae. 

 Secundus ordo Cryptobranchiorum. Genera : Sigaret, 

 Cryptostoma, Velutina, Capulus, Stomata, Crepi- 

 dula, Calyptrea, Mitrula. 

 Traeheloldae Agass. 1847. Nom. zooJ. Ind. un. vid. seq. 

 Traelieloitleis Feruss. 1819. Prodr. p. 61. et 1821. Tabl. 

 syst. p. XXXII. 



73) Toxosloma Wagl. (1831.) genus Aviuin. 



